Young Stellar Objects (YSOs) are stars in the early stages of their formation. They are typically found in dense regions of molecular clouds, where gas and dust come together under gravity. During this phase, YSOs are still accumulating mass from their surroundings, and they can be classified into different types based on their characteristics and stages of development. YSOs are important for understanding stellar evolution and the formation of planetary systems. They often exhibit strong infrared emissions due to the heat generated by the infall of material. Observing YSOs helps astronomers learn more about the processes that lead to the birth of stars and the development of systems like our own Solar System.